What is the meaning of Forward_compatibility?

5-letter words containing

• 5-letter words containing n

• 5-letter words containing i

• 5-letter words containing u

• 5-letter words containing e

• 5-letter words containing n

5-letter words starting with

• 5-letter words starting with n

• 5-letter words starting with t

• 5-letter words starting with n

• 5-letter words starting with d

• 5-letter words starting with o

5-letter words in the middle

• 5-letter words in the middle g

• 5-letter words in the middle a

• 5-letter words in the middle u

• 5-letter words in the middle c

• 5-letter words in the middle g

5-letter words ending with

• 5-letter words ending with u

• 5-letter words ending with u

• 5-letter words ending with c

• 5-letter words ending with s

• 5-letter words ending with o

5-letter words excluding

• 5-letter words excluding p

• 5-letter words excluding y

• 5-letter words excluding e

• 5-letter words excluding b

• 5-letter words excluding h